CVE-2023-28327: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.2% chance of exploitation in the next 30 days.

A NULL pointer dereference flaw was found in the UNIX protocol in net/unix/diag.c In unix_diag_get_exact in the Linux Kernel. The newly allocated skb does not have sk, leading to a NULL pointer. This flaw allows a local user to crash or potentially cause a denial of service.

Affected products

• Linux Linux Kernel: before 6.0 (fixed in 6.0)
• Red Hat Enterprise Linux: version 8.0 only; version 9.0 only

Published 2023-04-19. Last modified 2026-06-17.